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Diffstat (limited to 'src/charon/encoding/payloads/cert_payload.c')
-rw-r--r--src/charon/encoding/payloads/cert_payload.c290
1 files changed, 290 insertions, 0 deletions
diff --git a/src/charon/encoding/payloads/cert_payload.c b/src/charon/encoding/payloads/cert_payload.c
new file mode 100644
index 000000000..c456f4936
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+++ b/src/charon/encoding/payloads/cert_payload.c
@@ -0,0 +1,290 @@
+/**
+ * @file cert_payload.c
+ *
+ * @brief Implementation of cert_payload_t.
+ *
+ */
+
+/*
+ * Copyright (C) 2005-2006 Martin Willi
+ * Copyright (C) 2005 Jan Hutter
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#include <stddef.h>
+
+#include "cert_payload.h"
+
+
+ENUM(cert_encoding_names, CERT_NONE, CERT_OCSP_CONTENT,
+ "CERT_NONE",
+ "CERT_PKCS7_WRAPPED_X509",
+ "CERT_PGP",
+ "CERT_DNS_SIGNED_KEY",
+ "CERT_X509_SIGNATURE",
+ "CERT_X509_KEY_EXCHANGE",
+ "CERT_KERBEROS_TOKENS",
+ "CERT_CRL",
+ "CERT_ARL",
+ "CERT_SPKI",
+ "CERT_X509_ATTRIBUTE",
+ "CERT_RAW_RSA_KEY",
+ "CERT_X509_HASH_AND_URL",
+ "CERT_X509_HASH_AND_URL_BUNDLE",
+ "CERT_OCSP_CONTENT",
+);
+
+typedef struct private_cert_payload_t private_cert_payload_t;
+
+/**
+ * Private data of an cert_payload_t object.
+ *
+ */
+struct private_cert_payload_t {
+ /**
+ * Public cert_payload_t interface.
+ */
+ cert_payload_t public;
+
+ /**
+ * Next payload type.
+ */
+ u_int8_t next_payload;
+
+ /**
+ * Critical flag.
+ */
+ bool critical;
+
+ /**
+ * Length of this payload.
+ */
+ u_int16_t payload_length;
+
+ /**
+ * Encoding of the CERT Data.
+ */
+ u_int8_t cert_encoding;
+
+ /**
+ * The contained cert data value.
+ */
+ chunk_t cert_data;
+};
+
+/**
+ * Encoding rules to parse or generate a CERT payload
+ *
+ * The defined offsets are the positions in a object of type
+ * private_cert_payload_t.
+ *
+ */
+encoding_rule_t cert_payload_encodings[] = {
+ /* 1 Byte next payload type, stored in the field next_payload */
+ { U_INT_8, offsetof(private_cert_payload_t, next_payload) },
+ /* the critical bit */
+ { FLAG, offsetof(private_cert_payload_t, critical) },
+ /* 7 Bit reserved bits, nowhere stored */
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ /* Length of the whole payload*/
+ { PAYLOAD_LENGTH, offsetof(private_cert_payload_t, payload_length)},
+ /* 1 Byte CERT type*/
+ { U_INT_8, offsetof(private_cert_payload_t, cert_encoding) },
+ /* some cert data bytes, length is defined in PAYLOAD_LENGTH */
+ { CERT_DATA, offsetof(private_cert_payload_t, cert_data) }
+};
+
+/*
+ 1 2 3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Next Payload !C! RESERVED ! Payload Length !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Cert Encoding ! !
+ +-+-+-+-+-+-+-+-+ !
+ ~ Certificate Data ~
+ ! !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+
+/**
+ * Implementation of payload_t.verify.
+ */
+static status_t verify(private_cert_payload_t *this)
+{
+ if ((this->cert_encoding == 0) ||
+ ((this->cert_encoding >= CERT_ROOF) && (this->cert_encoding <= 200)))
+ {
+ /* reserved IDs */
+ return FAILED;
+ }
+ return SUCCESS;
+}
+
+/**
+ * Implementation of cert_payload_t.get_encoding_rules.
+ */
+static void get_encoding_rules(private_cert_payload_t *this, encoding_rule_t **rules, size_t *rule_count)
+{
+ *rules = cert_payload_encodings;
+ *rule_count = sizeof(cert_payload_encodings) / sizeof(encoding_rule_t);
+}
+
+/**
+ * Implementation of payload_t.get_type.
+ */
+static payload_type_t get_payload_type(private_cert_payload_t *this)
+{
+ return CERTIFICATE;
+}
+
+/**
+ * Implementation of payload_t.get_next_type.
+ */
+static payload_type_t get_next_type(private_cert_payload_t *this)
+{
+ return (this->next_payload);
+}
+
+/**
+ * Implementation of payload_t.set_next_type.
+ */
+static void set_next_type(private_cert_payload_t *this,payload_type_t type)
+{
+ this->next_payload = type;
+}
+
+/**
+ * Implementation of payload_t.get_length.
+ */
+static size_t get_length(private_cert_payload_t *this)
+{
+ return this->payload_length;
+}
+
+/**
+ * Implementation of cert_payload_t.set_cert_encoding.
+ */
+static void set_cert_encoding (private_cert_payload_t *this, cert_encoding_t encoding)
+{
+ this->cert_encoding = encoding;
+}
+
+/**
+ * Implementation of cert_payload_t.get_cert_encoding.
+ */
+static cert_encoding_t get_cert_encoding (private_cert_payload_t *this)
+{
+ return (this->cert_encoding);
+}
+
+/**
+ * Implementation of cert_payload_t.set_data.
+ */
+static void set_data (private_cert_payload_t *this, chunk_t data)
+{
+ if (this->cert_data.ptr != NULL)
+ {
+ chunk_free(&(this->cert_data));
+ }
+ this->cert_data.ptr = clalloc(data.ptr,data.len);
+ this->cert_data.len = data.len;
+ this->payload_length = CERT_PAYLOAD_HEADER_LENGTH + this->cert_data.len;
+}
+
+/**
+ * Implementation of cert_payload_t.get_data.
+ */
+static chunk_t get_data (private_cert_payload_t *this)
+{
+ return (this->cert_data);
+}
+
+/**
+ * Implementation of cert_payload_t.get_data_clone.
+ */
+static chunk_t get_data_clone (private_cert_payload_t *this)
+{
+ chunk_t cloned_data;
+ if (this->cert_data.ptr == NULL)
+ {
+ return (this->cert_data);
+ }
+ cloned_data.ptr = clalloc(this->cert_data.ptr,this->cert_data.len);
+ cloned_data.len = this->cert_data.len;
+ return cloned_data;
+}
+
+/**
+ * Implementation of payload_t.destroy and cert_payload_t.destroy.
+ */
+static void destroy(private_cert_payload_t *this)
+{
+ if (this->cert_data.ptr != NULL)
+ {
+ chunk_free(&(this->cert_data));
+ }
+
+ free(this);
+}
+
+/*
+ * Described in header
+ */
+cert_payload_t *cert_payload_create()
+{
+ private_cert_payload_t *this = malloc_thing(private_cert_payload_t);
+
+ /* interface functions */
+ this->public.payload_interface.verify = (status_t (*) (payload_t*))verify;
+ this->public.payload_interface.get_encoding_rules = (void (*) (payload_t*,encoding_rule_t**, size_t*))get_encoding_rules;
+ this->public.payload_interface.get_length = (size_t (*) (payload_t*))get_length;
+ this->public.payload_interface.get_next_type = (payload_type_t (*) (payload_t*))get_next_type;
+ this->public.payload_interface.set_next_type = (void (*) (payload_t*,payload_type_t))set_next_type;
+ this->public.payload_interface.get_type = (payload_type_t (*) (payload_t*))get_payload_type;
+ this->public.payload_interface.destroy = (void (*) (payload_t*))destroy;
+
+ /* public functions */
+ this->public.destroy = (void (*) (cert_payload_t*))destroy;
+ this->public.set_cert_encoding = (void (*) (cert_payload_t*,cert_encoding_t))set_cert_encoding;
+ this->public.get_cert_encoding = (cert_encoding_t (*) (cert_payload_t*))get_cert_encoding;
+ this->public.set_data = (void (*) (cert_payload_t*,chunk_t))set_data;
+ this->public.get_data_clone = (chunk_t (*) (cert_payload_t*))get_data_clone;
+ this->public.get_data = (chunk_t (*) (cert_payload_t*))get_data;
+
+ /* private variables */
+ this->critical = FALSE;
+ this->next_payload = NO_PAYLOAD;
+ this->payload_length = CERT_PAYLOAD_HEADER_LENGTH;
+ this->cert_data = chunk_empty;
+
+ return (&(this->public));
+}
+
+/*
+ * Described in header
+ */
+cert_payload_t *cert_payload_create_from_x509(x509_t *cert)
+{
+ cert_payload_t *this = cert_payload_create();
+
+ this->set_cert_encoding(this, CERT_X509_SIGNATURE);
+ this->set_data(this, cert->get_certificate(cert));
+ return this;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 05:39:36 +0000